National Transportation Safety Board investigators confirmed that a fire truck lacked a transponder during a collision with an Air Canada jet.The crash killed pilots Antoine Forest and his colleague while injuring over forty passengers as the jet arrived from Montreal on Sunday night.Air traffic controllers cleared the Port Authority vehicle to cross a runway before issuing frantic stop commands just seconds before the impact.Chairwoman
Jennifer Homendy indicated that the investigation will focus on communication blocks and controller fatigue during the late-night shift.